/*
 * Copyright 2020-2030 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gitee.minimalismstyle.fresh.gateway.config

import com.alibaba.csp.sentinel.adapter.gateway.sc.SentinelGatewayFilter
import com.alibaba.csp.sentinel.adapter.gateway.sc.exception.SentinelGatewayBlockExceptionHandler
import org.springframework.beans.factory.ObjectProvider
import org.springframework.cloud.gateway.filter.GlobalFilter
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import org.springframework.core.Ordered
import org.springframework.core.annotation.Order
import org.springframework.http.codec.ServerCodecConfigurer
import org.springframework.web.reactive.result.view.ViewResolver

/**
 * 路由网关统一配置
 * @author maoxiaodong
 */
@Configuration
class GatewayConfig {

    @Bean
    @Order(Ordered.HIGHEST_PRECEDENCE)
    fun sentinelGatewayBlockExceptionHandler(viewResolversProvider: ObjectProvider<List<ViewResolver>>,
                                             serverCodecConfigurer: ServerCodecConfigurer):
            SentinelGatewayBlockExceptionHandler {
        // Register the block exception handler for Spring Cloud Gateway.
        return SentinelGatewayBlockExceptionHandler(viewResolversProvider.ifAvailable, serverCodecConfigurer)
    }

    @Bean
    @Order(-1)
    fun sentinelGatewayFilter(): GlobalFilter {
        return SentinelGatewayFilter()
    }
}